mtk使用下面的命令查看，关联sta的rssi
/# iwpriv rai0 show stainfo
[ 131.784000] Show_MacTable_Proc(): arg=
[ 131.792000] Dump MacTable entries info, EntType=0x20001
[ 131.804000]
[ 131.808000]
[ 131.808000] MAC MODE AID BSS PSM WMM MIMOPS RSSI0/1/2/3 PhMd(T/R) BW(T/R) MCS(T/R) SGI(T/R) STBC(T/R) Idle Rate(T/R)
[ 131.836000] HT Operating Mode : 0
[ 131.844000]
[ 131.848000] 70:EF:00:AF:31:52 20001 1 0 0 1 3 -82/-82/-77/-50 VHT/VHT 80M/80M 2S-M7/2S-M6 0/0 0/0 478 585/526 0 , 0, 0%
[ 131.876000] MaxCap:VHT 80M 2S-M9 1 0 - 866 HTC_ICVErr:0 HTC_AAD_OM_Force:NO wdev0
[ 131.916000]
[ 131.920000] sta_cnt=1
apcli_cnt=0
rept_cnt=0
oui_mgroup=0
repeater_wcid_error_cnt=0
repeater_bm_wcid_error_cnt=0
HTC_ICV_Err_TH=5
-65以上的RSSI就比较好了。-70多信号比较差，-50信号非常好。